Improvement in thrust-bearings



UNITED STATES PATENT QFFIGE;

EDWARD MARSLAND, OF SING SING, NEW YORK.

IMPROVEMENT IN THRUST-B EARINGS.

Specification forming part of Letters Patent No. 154.761, datedSeptember 8, 1874 application filed December 13, 1873.

To. all whom it may concern:

Be it known that I, EDWARD MARSLAND, of Sing Sing, in the State of NewYork, have invented certain new and useful Improvements in ThrustBearings for Propeller- Shafts; and hereby declare the following to be afull and clear description of the same, reference being had to theaccompanying drawing, in which- Figure 1 is a top View. Fig. 2 is alongitudinal section through the lines 0 D, showing the shaft inposition; and Fig. 3 is a cross-section through the line A B, Fig. 1.

The object of my invention is to provide a thrust-bearin g forpropeller-sh afts, constructed in such a manner that all parts of theshaft and hearing may be easily inspected, and the thrust-platesadjusted or removed at pleasure; and my improvements consist principallyin the use of a series of removable and adjustable bearings orthrust-plates combined with an open construction of the entire bearings,and a suitable means of adjusting the thrust-plates, as hereinafter moreparticularly described.

In the drawing, E is a bed or base plate, upon which is placed, at eachend, the pedestals F F, having bearings in which the shaft G rests.Between these pedestals I provide the base-plate E and top plate H, withprojections a a corresponding in number and position with the collars bb 011 the shaft. About half-way up the pedestals F I place the,carrier-bars J, which are secured in any convenient manner-to the sideof the pedestals, and carry the adjusting-screws c 0, one of such screwsbeing placed directly opposite each of the sections or hearing -platesK. These thrust-plates K K are inade to fit the shaft between thecollars, and may be of steel, iron, brass, anti-friction metal, orcombinations of such materials as may be found best suited to thepurpose. The top plate or cap H is fastened in place by the screws L,which pass down through the pedestals, and. also is provided with a gibor lip, 11, at each end, which slips over the top of the pedestals inorder to take the thrust of the shaft. I also make the top plate with alongitudinal slot, as shown in the drawing, Fig. 1, so that a view isafforded of the thrust-plates and collars. On the baseplate, and runningfrom one to the other of the pedestals, on each side, I place the stripsM M, which collect the oil dropping from the shaft and bearings. Theshaft G being placed in position, and restingupon its bearings in thepedestals F F, the sections or thrust-plates K K are fitted in betweenthe collars b b, and held from any longitudinal movement by theprojections a a on the base and top plate, while they are regulatedandadjusted laterally by the set-screws 0 0. Instead of havingtheprojections to a cast on the base and top plates, these interveningprojections may be cast on, or made a part of, the sections orthrust-plates K K, although I prefer to have them made on the base andcap, as shown in the drawing.

It will be perceived from the foregoing description that thebearing-surface is greatly increased, as the whole face of thethrust'collars on the shaft bear against the thrust-plates, While theentire bearing is under the inspection and control of the engineerorperson in charge, and any defect from hot collars is obviated oreasily overcome, as the thrust-plates or sections may be adjusted atpleasure, or entirely removed horizontally for the purpose of cleaning,and may be replaced by new ones in case they become in any mannerdefective.

I claim-- 1. A thrustbearing, having detachable and adjustablethrust-plates or sections, substantially as shown and described.

2. A thrust-bearing, having a bottom plate, E, and cap H, withprojections a a thereon, in combination with adjustable thrust-platesorsections K K, substantially as shown and described.

3. A thrust-bearing, having detachable and adjustable thrust-plates K K,in combination with set-screws c 0, held by carrier-bars J J,substantially as and for the purpose shown and described.

4. Athrust-bearing, substantially as shown L. H. BOOLE,

JOHN B. RoAcH.

